Question 1

Is Boroux NSF certified?

Accepted Answer

Not by NSF, and yes to an NSF/ANSI standard — which sounds contradictory until you separate the standard from the certifier.

NSF's own drinking water treatment unit directory returns 'No Matching Products Found' for Boroux, checked 2026-09-18. IAPMO R&T returns 'No data found'.

WQA does list it, under the company name James Enterprise Inc rather than Boroux, against NSF/ANSI 401 and NSF/ANSI 42. WQA is an accredited certification body authorised to certify against the NSF/ANSI standards, so that listing is equivalent in weight to an NSF-issued one.

So 'Boroux is NSF certified' is wrong, and 'Boroux is certified to NSF/ANSI standards' is right. Once you know the scope, check your water quality by ZIP code to see which contaminants your own supply carries.

Question 2

What does a Boroux filter actually remove, according to its certification?

Accepted Answer

Two things, by name: microplastics and particulates. The NSF/ANSI 401 row names Microplastics as its only reduction claim. The NSF/ANSI 42 row names Nominal Particulate Class I as its only reduction claim. That is the complete list of contaminants any Boroux listing names. The third row, NSF/ANSI/CAN 372, is not a removal claim at all — it certifies the material as lead-free, meaning the part does not add lead to your water. Boroux publishes its own lab testing covering considerably more than this, as most gravity brands do. We are not disputing those results; we are reporting what a certifier has listed, because that is the claim with an audit behind it. If you need a specific contaminant handled, look for it by name on a listing.

Question 3

Is Boroux better than Berkey?

Accepted Answer

On certification Boroux has more to show, and neither has much. Boroux holds a WQA listing for microplastics and particulate reduction. A search of the NSF, IAPMO R&T and WQA directories under 'Berkey' returns no listing at all, so there is nothing of that kind to compare against. That is a narrow basis for 'better'. Both brands sell gravity systems and both lean primarily on independent lab reports rather than certifier listings. Boroux's advantage is that some of its claims have been through a certification scheme with annual facility audits; the advantage covers two contaminants. If certification is what you are optimising for, neither gravity brand is where that search ends — a listing with a health-effects standard on it covers far more ground.

Question 4

Does Boroux remove lead or PFAS?

Accepted Answer

Neither claim appears on any Boroux certifier listing. There is no NSF/ANSI 53 health-effects row for any Boroux model, which is the standard under which lead reduction is certified. There is no PFAS, PFOA or PFOS claim on any row. The 'Lead Free' row you may have seen is NSF/ANSI/CAN 372, a material standard about the lead content of the part itself. We will not tell you the filter fails at these — we have not tested it, and absence from a directory is not a test result. We are telling you that on 2026-09-18 no listing in the three directories we check named lead or PFAS for this brand. If either is your reason for filtering, our pages on lead in drinking water and PFAS in drinking water explain which standards carry those claims and what to look for.

Question 5

How long does a Boroux filter element last?

Accepted Answer

We have not verified a service life for these elements, so we do not publish one. WQA's result rows name the listee, standard, product category, product type, brand, model and reduction claims. Unlike NSF's refrigerator-cartridge rows, they carry no rated capacity in gallons and no replacement interval. Boroux states an element life on its own packaging and documentation, and that is the right place to read it. We would rather send you there than repeat a figure we have not opened a source for — particularly for a gravity system, where throughput depends heavily on how you use it.

Question 6

Where are Boroux filters made?

Accepted Answer

Not established by the records we read. WQA's result list identifies the listee as James Enterprise Inc and names the certified models. It does not name a manufacturing facility. NSF and IAPMO R&T return no record for this brand at all, so there is no facility of record anywhere for us to cite. Some certifier listings do carry a facility list — NSF's Samsung rows name sites in the Republic of Korea, for instance. These do not. We would rather leave this blank than infer a country of origin from a company name.

Question 7

Why does searching a certifier for 'Boroux' find nothing?

Accepted Answer

Because the listing is filed under the company, not the brand. WQA's listee for every Boroux row is James Enterprise Inc. This is the single most common way a certified product looks uncertified. It is not unique to Boroux: Frigidaire's files are under Electrolux Home Products, EveryDrop's under Whirlpool Corporation, Kenmore's under three spellings of Sears Brands Management, and Samsung is under two different names depending on which certifier you ask. If a brand-name search comes back empty, the next step is to find the legal entity that files its certifications, not to conclude the product is uncertified. We ran a control search for a company name that cannot exist in the same session, so we could tell a real empty result from a search that silently failed to run.

SKU / Model	Standards held	What’s certified	Brand claims but NOT certified	Listing
BX-L-SYS-COM Boroux Legacy Compact — BX-L-SYS-COM, Countertop Manual Fill	Performance NSF/ANSI 401 NSF/ANSI 42 Material & component safety NSF/ANSI 372	Nominal Particulate Class I Microplastics	No discrepancy The NSF/ANSI/CAN 372 row is the only row on this model containing the word lead, and it is a material standard — it certifies that the part does not contribute lead to the water, not that the filter removes lead already in it. There is no NSF/ANSI 53 health-effects listing on any Boroux model. Read more	View WQA listing
BX-L-SYS-3 Boroux Legacy — BX-L-SYS-3, Countertop Manual Fill	Performance NSF/ANSI 401 NSF/ANSI 42 Material & component safety NSF/ANSI 372	Nominal Particulate Class I Microplastics	No discrepancy	View WQA listing

Feature	Boroux	Berkey
Certifier holding a listing	WQA only, under the listee James Enterprise Inc	No listing under 'Berkey' in the NSF, IAPMO R&T or WQA directories
Certified contaminant claims	Microplastics (NSF/ANSI 401) and Nominal Particulate Class I (NSF/ANSI 42)	None listed in the three directories this site indexes
Certified lead reduction	No — its only lead row is NSF/ANSI/CAN 372 lead CONTENT	No listing in these three directories to carry one
Product form	Gravity, 'Countertop Manual Fill' in WQA's classification	Gravity countertop system

Feature	Boroux	AquaTru
Certifier and listee	WQA, listed to James Enterprise Inc	IAPMO R&T, listed to AQUATRU, LLC
Standards held	NSF/ANSI 42, NSF/ANSI 401 and NSF/ANSI/CAN 372	NSF/ANSI 42, 53, 58, 401 and NSF/ANSI/CAN 372
Health-effects listing (NSF/ANSI 53)	Not held	Held
Named contaminant claims on the listing	Two — Microplastics, Nominal Particulate Class I	A per-standard menu including health-effects contaminants

Boroux Water Filters

Best for

Not recommended for

Certification Reality: What's Actually Tested

Check Certification for a Boroux Filter

About Boroux

Boroux Legacy (BX-L-SYS-3)

Boroux Legacy Compact (BX-L-SYS-COM)

Foundation element (BX-FND9-2)

Which Boroux Filter Is Right for You?

How Boroux Compares

Boroux vs Berkey

Boroux vs AquaTru

What Reddit Says About Boroux

About Boroux Marketing Language

Boroux is certified. It is certified for two contaminants.

Frequently Asked Questions About Boroux Water Filters